California Highway Patrol officers responded to a call on the incident about 10:10 p.m. They found a blue van that matched the suspect vehicle's description in the area of Bianchi Road and Townehome Drive.

Officers said they saw the driver of the van run a stop sign and throw an object out the driver's side window. They said they detained 38-year-old Ho Tran in a traffic stop.

The object that was thrown to the ground was recovered and determined to be a silver, five-shot, .22-caliber handgun, officials said.

Stockton police were called to take over the investigation and arrested Tran on suspicion of felony weapons charges.